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This is a list of telephone area codes of Pennsylvania. In 1947, the American Telephone and Telegraph Company divided Pennsylvania into four numbering plan areas (NPAs) and assigned distinct area codes for each. Since 1995, several relief actions in form of area code splits and overlays have expanded the list of area
The runoff curve number (also called a curve number or simply CN) is an empirical parameter used in hydrology for predicting direct runoff or infiltration from rainfall excess. [1] The curve number method was developed by the USDA Natural Resources Conservation Service , which was formerly called the Soil Conservation Service or SCS — the ...
The codes were assigned by NIST and each uniquely identified a state, the District of Columbia, or an outlying area of the U.S. These codes were used by the U.S. Census Bureau , the Department of Agriculture to form milk-processing plant numbers, some cash registers during check approval, and in the Emergency Alert System (EAS).
When area codes were introduced in 1947, their middle digit was either 0 or 1. In 1994, area code 610 was the last area code assigned with digit 1 in that position. The next new area codes assigned in 1995 (334 in Alabama, and 360 in Washington state) were the first interchangeable area codes.
Map of South Carolina area codes. The state of South Carolina is served by the following area codes: 803 / 839, which serves the Midlands (central) of South Carolina, including Columbia; 843 / 854, which serves the Lowcountry (eastern and coastal) of South Carolina; 864 / 821, which serves Upstate (northwest) South Carolina
Area code 814 is the original area code assigned to the numbering plan area in 1947. Area code 582 was activated in the service area as an additional code to form an overlay numbering plan with a starting date of October 3, 2020.
Look at the area code: Start by comparing the phone number’s area code to the list of area codes you should never answer. If it’s on the list, there’s a good chance there’s a scammer on ...
Area codes 215, 267, and 445; Area code 412; Area code 445; Area codes 570 and 272; Area codes 610, 484, and 835; Area codes 717 and 223; Area code 724; Area codes 814 and 582; Area code 835; Area code 878